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PublicCMS CVE-2026-8739

| EUVD-2026-30687 MEDIUM
Use of Hard-coded Cryptographic Key (CWE-321)
2026-05-17 VulDB GHSA-2352-54f8-q7h5
Java Information Disclosure
5.5
CVSS 4.0
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CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

2
Analysis Generated
May 17, 2026 - 08:30 vuln.today
CVSS changed
May 17, 2026 - 08:22 NVD
5.3 (MEDIUM) 5.5 (MEDIUM)

DescriptionNVD

A vulnerability was detected in Sanluan PublicCMS 5.202506.d. The affected element is the function getSignKey of the file publiccms-core/src/main/java/com/publiccms/logic/component/config/SafeConfigComponent.java. The manipulation of the argument privatefile_key results in use of hard-coded cryptographic key . The attack can be executed remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

AnalysisAI

Hard-coded cryptographic key in Sanluan PublicCMS 5.202506.d allows remote attackers to compromise data integrity through the SafeConfigComponent's getSignKey function. The vulnerability (CWE-321) enables manipulation of the privatefile_key argument, permitting unauthenticated network-based attacks with low complexity. …

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CVE-2026-8739 vulnerability details – vuln.today
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